CVE-2026-41267 Flowise: Improper Mass Assignment in Account Registration Enables Unauthorized Organization Association
Unauthenticated attackers can inject organization and role fields during registration to gain unauthorized access in Flowise Cloud.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-41267?
CVE-2026-41267 is a high-severity missing authorization vulnerability in Flowiseai Flowise, published on 23 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, an improper mass assignment (JSON injection) vulnerability in the account registration endpoint of Flowise Cloud allows unauthenticated attackers to inject server-managed fields and nested objects during account creation. This enables client-controlled manipulation of ownership metadata, timestamps, organization association, and role mappings, breaking trust boundaries in a multi-tenant environment. This vulnerability is fixed in 3.1.0.
Which versions are affected by CVE-2026-41267?
2 open source packages ship an affected version, including flowise. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
flowise npm | All versions | 3.1.0 |
flowise npm | All versions | 3.1.0 |
Products include Flowiseai Flowise.
How do I fix CVE-2026-41267?
Upgrade flowise to 3.1.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-41267 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41267 exists.
Other vulnerabilities in Flowiseai Flowise
- CVE-2025-71338 Flowise through 2.2.7 - Arbitrary File Write to Remote Code Execution via document-store API
- CVE-2026-40933 Flowise: Authenticated RCE Via MCP Adapters
- CVE-2025-61913 Flowise is vulnerable to arbitrary file read, arbitrary file write
- CVE-2025-59528 Flowise has Remote Code Execution vulnerability
- CVE-2026-52098 Code injection in n/a
Sources
Also known as GHSA-48m6-ch88-55mj.